Humminbird 581i DI Fishfinder/GPS Combo w/Down Imaging

581i DI Fishfinder/GPS Combo with Down ImagingPart #: 408470-1The 581i Combo features an ultra-high resolution 16 level grayscale 640V x 320H 5" display DualBeam sonar with 2000 Watts PTP power output and GPS Chartplotting with built-in UniMap. Features: Dualbeam plus sonar delivers wide coverage and better bottom definition Ability to freeze frame allows user to mark exact structure location Real Time Sonar window (RTS) Selective fish ID Split screen zoom Quick disconnect mounting system Water temperature and GPS speed included Sonar echo enhancement Front mounted internal GPS allows in-dash mounting Single Front Side SD card slot 5" mono FSTN LCD 640V x 320H 16 Level Grayscale GPS Speed Included 83 kHz/60 degrees & 200 kHz/20 degrees Down Imaging 455 kHz/86 degrees 800 kHz/55 degrees 250 Watts RMS 2000 Watts PTP 50 Channel GPS UniMap Built-in Navionics Compatible Product : HUMMINBIRD 581I DI FISHFINDER GPS COMBO DOWN IMAGING Manufacturer : HUMMINBIRD Manufacturer Part No : 408470-1 UPC : 082324036446